Churn dasher



July 8 1924.

J. W. LANCASTER cm'mu DA-SHER Filed ma 24;, 1923' m L. {E m. T.

latented July 8, 1924.

PATENT OFFICE.

JAMES w. LANCASTER, ordsnn a'rn, MISSOURI.

- cmmn DASHER.

"Application filed May 24,

T all whom it may concern: 1

Be it known that I, JAMES W. LANCASTER,

a citizen of the United States, residing at Senath, in the county ofDunklin and State a of Missouri, have invented certain newand usefulImprovements in Churn Dashers, of which the following is aspecification.

This invention relates to improvements in churn dashers, such as areordinarily used for churning buttery p The primary object of thisinvention is the provision of a churn dasher, which is relatively simplein construction, and which embodies propellers operable in oppositedirections upon reciprocatory movement of the dasher througha mass ofliquid, as to effect a churning action both upon the up and downmovements of the dasher.

A further object of this invention is the provisionof a dasher of theabovementioned character which is relatively simple in 0onstructiomembodying' detachable partswhich provide a structure which maybe readily cleaned and is thereby highly desirable for the purpose forwhich the same is provided.

A further object of the invention is the provision of a churn dasher'ofthe above mentioned character, which may be used to economicallychurn butter, effecting the churning in but a minimum of the time nowrequired for churning by ordinary methods.

Otherobjects and advantages of this invention will be apparent duringthe course of the following detailed description.

In the accompanying drawing, forming a part of this specification, andwherein similar reference characters designate corresponding partsthroughout the several views:

Figure 1 is a side elevation of the improved churn dasher, showing thehandle portion thereof partly broken away.

Figure 2 is a fragmentary view, partly in cross section, showing thepropeller end of the improved dasher, taken on the line 2-2 of Figure 1.

Figure 3 is a cross sectional view, taken substantially on the line 33of Figure 2, showing improved features of a propeller used in connectionwith this invention.

In the drawing, wherein for the purpose of illustration is shown but thepreferred embodiments of the invention, the letter A may generallydesignate the improved churn dasher which may include a handle B,propellers C and D; and means E for retain- 1923. Serial No. 641,382.

ing the propellers upon the handle so that the same'may rotate inopposite directions. Referring to the handle B, the same 15 preferablyof wood or analougous material extension 10, as an integral partthereof, for

receiving a sleeve or ferrule 11, as by means of a rivet-12 securing thesame thereon; the outer surface of the ferrule 11 lying flush withtheouter surface of the major portion of the handle B. The ferrule 11,at its lower end, is preferably provided with a portion 14, having atapped opening 15 extending u wardly therein, and "continuing axiallythrough the extension 10 of the handle B for 'the detachable receptionof the screw threaded end 16 of a'bolt 17 for supporting the propellersC and D; the bolt 17 and the ferrule therefor preferably comprising aportion ofthe-means E for supporting the propellers C and'D upon thehandle B.

Referring to the propeller C, the same is preferably of two partconstruction, including'parts 17 and 18. The part 17 includes a hubportion 20 having the radial blades 21 and 22 oppositely extendingtherefrom; the

hub portion 20 thereoffbeing provided with atransverse groove'23inwardly of the bottom face thereof, wherein may fit the hub portion 25of the part 18. The part 18 includes the hub portion 25 having thepropeller blades 27 and "28 radially "extending outwardly therefrom. Thehub portions 20 and 25 of the propeller parts 17 and 18 respectively are-preferably provided with aligning openings 29 and 30 therein, which mayreceive the shank of the bolt 17 therein for rotation upon the shank.The hub portion 25 is of course relatively smaller than the hub portion20 of the part 17*, but when the hub portion 25 of the part 18 restswithin the groove 23 pro vided therefor in the hub portion 20 of thepart 17*, the blades 21, 22, 27 and 28 of the propeller G are all cantedat the same angle and in the same direction, so that upon drawing thepropeller through a mass of liquid the same may be rotated by deflectionof the liquid against the canted blades, as can be readily understood.

Referring to the propeller D, the same preferably includes parts 35 and36; the part 35 including a relatively large hub portion 38 having uponop osite sides thereof radially extending bla es 39 and 40, and beinggrooved inwardly from an end thereof with a transverse groove 42 for thesnug reception of the hub portionv 43 of the propeller part 36. The hubportion 43 of the part 36 is of course relatively smaller than the hubportion 38 of the other part 35, and is preferably of polygonal crosssec.- tion for fitting within the groove 42. This hub portion 43 ispreferably provided with oppositely disposed propeller blades 47 and 48thereon, so that when the parts 35 and 36 are assembled they will extendsubstantially at right angles to the alignment of the propeller bladesof the part 35. Inwardly of l the hub portion 38, on the face thereofopposite to that face in which groove 42 is provided, it is preferred toprovide a frustoconical recess 50. The hub portions 38 and 43 arepreferably provided with axial passageways 55 and 56 therethrough, whichwhen the parts 35 and 36 are assembled are in alignment for reception.of the shank of the bolt 17.

Referring to the assembly of the propellers C and D in a definiterelation, the propeller C is first assembled against the lower end 14 ofthe ferrule 11 and is rotatably disposed upon the shank of the bolt 17In this relation the propeller D is below the propeller C, with thesmaller hub portions- 25 and 43 of the propellers C .and D respectivelyin abutting relation, and the head 57 of the bolt 17 and a washer 58lying within the frusto-conical recess and supporting the propellers Cand D in their rotatable relation upon'the bolt 17. The blades 39, 40,47 and 48, of the propeller D, are of course, all canted in the samedirection.

The blades of the propellers C are inclined in a direction opposite tothe direction in which the blades of the propeller D are'inclined, sothat the propellers during their movement through a mass of liquid willmove in opposite directions to effect a turning action.

From the foregoing description of this inpropellers rotatably mountedadjacent the lower end of the handle and positioned one above the other,the upper propeller having a hub, a set of blades extending from the hubupon an axis extending at right angles to the axis of the handle, and asecond set of blades extending from said hub and inclined upwardly, thelower propeller having a hub,

a set of blades extending therefrom upon an axis extending at rightangles to the axis of the handle and a second set of blades inclineddownwardly.

2. A churn dasher including a handle,

and propellers rotatably'connected with the handle adjacent each otherand positioned one above the other, each propeller having a hub andblades extending from the hub, upon an axis at right angles to the axisof the, handle, the propellers being provided with additional bladeswith the last mentioned blades of one propeller inclined up-1 wardly andthe last mentioned blades of the other propeller inclined downwardly.

3. A churn dasher comprising a handle, and a propeller rotatablyconnected with the handle .and having a hub, a setof blades extendingradially from the hub and each upon an axis entending at right angles tothe axis 'of the handle, and a second set of blades extending radiallyfrom the hub and each upon an axis extending at an incline to the axisof the handle.

JAMES w. LANCASTER.

